STRT Strattec Security Corp.
Strattec Security Corp. (STRT) Institutional Ownership
What the institutions did with STRT last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| GAMCO INVESTORS, INC. ET AL | 506.9K | 13.8% |
| BlackRock, Inc. | 324.9K | 8.8% |
| ALLIANCEBERNSTEIN L.P. | 278.1K | 7.6% |
| GABELLI FUNDS LLC | 254.3K | 6.9% |
| DIMENSIONAL FUND ADVISORS LP | 253.7K | 6.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 172.6K | 4.7% |
| AMERICAN CENTURY COMPANIES INC | 165.6K | 4.5% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 112.7K | 3.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 109.3K | 3.0% |
| MILLENNIUM MANAGEMENT LLC | 105.3K | 2.9% |
| STATE STREET CORP | 84.3K | 2.3% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 82.0K | 2.2% |
| RENAISSANCE TECHNOLOGIES LLC | 69.2K | 1.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 51.3K | 1.4% |
| Allspring Global Investments Holdings, LLC | 49.1K | 1.3% |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 48.4K | 1.3% |
| AMERIPRISE FINANCIAL INC | 46.7K | 1.3% |
| ACADIAN ASSET MANAGEMENT LLC | 46.6K | 1.3% |
| De Lisle Partners LLP | 42.8K | 1.2% |
| LAZARD ASSET MANAGEMENT LLC | 42.5K | 1.2% |
| AQR CAPITAL MANAGEMENT LLC | 41.4K | 1.1% |
| GOLDMAN SACHS GROUP INC | 38.3K | 1.0% |
| NORTHERN TRUST CORP | 35.9K | 1.0% |
| PANAGORA ASSET MANAGEMENT INC | 33.8K | 0.9% |
| CITADEL ADVISORS LLC | 32.5K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | Increased | 11.6K | 105.3K | +93.8K |
| ALLIANCEBERNSTEIN L.P. | Increased | 217.3K | 278.1K | +60.9K |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 86.0K | 46.6K | -39.5K |
| CITADEL ADVISORS LLC | New | 0 | 32.5K | +32.5K |
| Factorial Partners, LLC | Sold Out | 30.2K | 0 | -30.2K |
| Trexquant Investment LP | New | 0 | 28.9K | +28.9K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 93.8K | 69.2K | -24.6K |
| AMERIPRISE FINANCIAL INC | Reduced | 69.4K | 46.7K | -22.7K |
| AMERICAN CENTURY COMPANIES INC | Increased | 143.7K | 165.6K | +22.0K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Increased | 91.6K | 112.7K | +21.1K |
| Luxor Capital Group, LP | New | 0 | 21.0K | +21.0K |
| JANE STREET GROUP, LLC | Reduced | 28.0K | 8.6K | -19.4K |
| BlackRock, Inc. | Increased | 306.3K | 324.9K | +18.7K |
| PANAGORA ASSET MANAGEMENT INC | Increased | 15.3K | 33.8K | +18.5K |
| GOLDMAN SACHS GROUP INC | Increased | 19.8K | 38.3K | +18.5K |
| SEI INVESTMENTS CO | Sold Out | 17.7K | 0 | -17.7K |
| Invesco Ltd. | Reduced | 29.8K | 12.7K | -17.1K |
| Informed Momentum Co LLC | Sold Out | 14.6K | 0 | -14.6K |
| Integrated Quantitative Investments LLC | Sold Out | 13.5K | 0 | -13.5K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 98.7K | 109.3K | +10.6K |
| Allspring Global Investments Holdings, LLC | Reduced | 59.7K | 49.1K | -10.6K |
| Susquehanna Portfolio Strategies, LLC | New | 0 | 9.8K | +9.8K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Sold Out | 8.8K | 0 | -8.8K |
| GAMCO INVESTORS, INC. ET AL | Reduced | 514.5K | 506.9K | -7.7K |
| Legato Capital Management LLC | Sold Out | 7.5K | 0 | -7.5K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 179.7K | 172.6K | -7.1K |
| FMR LLC | Increased | 545 | 7.4K | +6.9K |
| GABELLI FUNDS LLC | Increased | 247.8K | 254.3K | +6.5K |
| De Lisle Partners LLP | Reduced | 48.8K | 42.8K | -6.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 248.1K | 253.7K | +5.6K |
| Man Group plc | Increased | 10.1K | 15.4K | +5.3K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 46.3K | 51.3K | +5.1K |
| MARTINGALE ASSET MANAGEMENT L P | Increased | 16.2K | 21.2K | +5.0K |
| HSBC HOLDINGS PLC | Sold Out | 4.9K | 0 | -4.9K |
| Horizon Investment Services, LLC | Sold Out | 4.8K | 0 | -4.8K |
| Qube Research & Technologies Ltd | Increased | 27.6K | 32.3K | +4.8K |
| Hillsdale Investment Management Inc. | Sold Out | 4.7K | 0 | -4.7K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 7.1K | 11.8K | +4.6K |
| BAILARD, INC. | New | 0 | 4.5K | +4.5K |
| UBS Group AG | Increased | 15.0K | 19.4K | +4.3K |
| Russell Investments Group, Ltd. | Increased | 5.3K | 9.6K | +4.2K |
| WINTON GROUP Ltd | Sold Out | 4.2K | 0 | -4.2K |
| Cambridge Investment Research Advisors, Inc. | Sold Out | 3.8K | 0 | -3.8K |
| JPMORGAN CHASE & CO | Increased | 1.8K | 5.6K | +3.8K |
| Eddie Patel Inc | Sold Out | 3.7K | 0 | -3.7K |
| FRANKLIN RESOURCES INC | Increased | 9.5K | 13.1K | +3.6K |
| Jump Financial, LLC | Sold Out | 3.4K | 0 | -3.4K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Reduced | 34.4K | 31.2K | -3.2K |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | Increased | 45.1K | 48.4K | +3.2K |
| HRT FINANCIAL LP | Sold Out | 3.2K | 0 | -3.2K |
| NORTHERN TRUST CORP | Reduced | 38.7K | 35.9K | -2.8K |
| MORGAN STANLEY | Reduced | 22.1K | 19.4K | -2.7K |
| VICTORY CAPITAL MANAGEMENT INC | Increased | 6.7K | 9.2K | +2.5K |
| WELLS FARGO & COMPANY/MN | Reduced | 6.1K | 3.6K | -2.5K |
| TWO SIGMA INVESTMENTS, LP | Increased | 3.9K | 6.2K | +2.3K |
| GLOBEFLEX CAPITAL L P | Sold Out | 2.3K | 0 | -2.3K |
| State of Tennessee, Department of Treasury | Reduced | 5.2K | 3.0K | -2.2K |
| LSV ASSET MANAGEMENT | New | 0 | 2.2K | +2.2K |
| Teton Advisors, LLC | Reduced | 21.3K | 19.3K | -2.0K |
| BARCLAYS PLC | Reduced | 3.9K | 2.0K | -1.9K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.